class_docstr: Template meson build file generation class.
code: def meson_build_template(self) -> str:
      if not self.build_template_path.is_file():
          raise FileNotFoundError(
              errno.ENOENT,
              "Meson build template"
              f" {self.build_template_path.absolute()}"
              " does not exist.",
          )
      return self.build_template_path.read_text()
  
imports: from __future__ import annotations
  import os
  import errno
  import shutil
  import subprocess
  import sys
  from pathlib import Path
  from ._backend import Backend
  from string import Template
  from itertools import chain
  import warnings
label_desc: Use image node_id 2 for calling the MesonTemplate obj's underlying member method code with example usage: obj.meson_build_template() and returns: self